Piston to wall clearance??

[wpeschel]

I am having a engine built.. I was wanting some suggestions on piston to wall clearance.. Some one once suggested to run 4-5 thousands???

 

[Joesixpack]

If your going to put the screws to it, .0075 is a good number. 4-5 thou great for a stocker, but quite a few out there now tighten'd up when the piston fatten'd up from egts.

 

[smokingoat04]

depends what your going to do, full on puller 10-12 thousanths

 

[wpeschel]

Daily driver/tow rig.. Maybe 450hp in the future with a small set of towing twins..

 

[massdiesel]

5-8"

 

[kipo]

what about coated pistons? will they swell as much?

 

[Scooter's Roofing]

what about coated pistons? will they swell as much?

a quality coating will prevent the piston from absorbing as much heat, so it will in-turn prevent swelling